Download and unpack the port files to the directory with original Shadow Warrior game files (in my case 'D:\games\shadow warrior'), overwriting all files.

Start 'Setup.exe' from the same directory to start JFShadowWarrior configuration.

Click 'Music, Sound and Video' button to open 'Music, Sound and Video' window. Ensure, that 'Voices' are set to maximum value, 'Sample Size' is set to '16 bit' and 'Sample Rate' is set to maximum, supported by your sound card. Select the most suitable video resolution supported by your hardware. Click 'Close' to return to main configuration menu.

Click 'Input Devices' to open in-game controls configuration. Set up the keyboard/mouse controls here. Click 'Close' to return to main configuration menu.